Yeah, once you have used a SSD you can never willingly go back to using a mechanical drive. The transition would be too painful.
Even my second computer, which is quite powerful (i7-2700k with 16 GB of RAM), feels agonizingly slow because it is stuck on a 500 GB mechanical drive. Though I use it so infrequently I should just strip the drives out of it and sell it as a bare bones...
I'm kinda holding out for a few innovations to hit the market, hopefully sometime this year, before I upgrade both my parents machines from their current mechanical drives to SSDs and I'll probably pick up a new one for my own machine while I'm at it. Right now picking a SSD is still a bit too much of a trade-off, the numbers the manufacturers like to say "up to 80,000 random IOPs" is only at 4 KB random with a queue depth of 32, which is pretty much a pure torture test (basically even enterprise workloads shouldn't be that hard) and not really an effective benchmark. What usually wins the general usage benchmarks is how the drive does at random 512b-4K at a queue depth of 1-4 where these drives are actually a LOT slower than the peak numbers from 4K@QD32 (but still epically faster than a mechanical HDD). This is why the Samsung 840 EVO, which only has middling to adequate performance in the torture tests still beats the Intel SSD 730 at most realistic benchmarks. The 730 reigns supreme with its performance in the torture tests where it is like 10-20x faster in its tortured state than pretty much any other drive, but is actually on the weaker side of SSDs for that small / low queue depth stuff.
Basically there are two extremes, right now the marketing is focused on the big tortured workload extreme because it has the biggest numbers and everyone likes big numbers. The other extreme is the small numbers, meaning how little time does it take you do to an equally little workload. I think SSD manufacturers are going to start paying more attention to the small end in the next few years for a couple of reasons. First, the high end is pretty much limited by the interface speed anymore, so 80,000 IOPs on SATA 6 and probably in the neighborhood of ~120,000 on SATAe/PCie x2, once you hit that there really is nowhere else to go but down. And second, getting the low queue depth stuff done faster so the drive can then go into a lower power state is getting increasingly important as more and more people are switching to laptops or tablets or other mobile devices which benefit from having a drive that doesn't run down the battery any more then absolutely necessary.
